Knossos

Early in the guided tour - the "crazy paving" courtyard is original, along with the lower part of the stone wall: the concrete construction on top of the wall is the rear of one of Sir Arthur Evans's reconstructions. He deliberately used concrete instead of stone to show that they were reconstructions. To the right of the picture you see another original building, almost two storeys high, with modern additions, presumably to keep it standing.

Knossos

Early in the guided tour - the "crazy paving" courtyard is original, along with the lower part of the stone wall: the concrete construction on top of the wall is the rear of one of Sir Arthur Evans's reconstructions. He deliberately used concrete instead of stone to show that they were reconstructions. To the right of the picture you see another original building, almost two storeys high, with modern additions, presumably to keep it standing.